Defining cycles - Interpolation Calendar tab
You must specify this information on the Interpolation
        Calendar tab.
	 - Interpolation Calendar
 - The name of the Interpolation Calendar that defines the interpolation values for each
            day of this cycle.Note: The Interpolation Calendar is used with the Period Spread Measure option to create a default cycle spreading measure for period interpolation.
 - Period Spread Measure
 - The measure to populate with period interpolation values from the
            Interpolation Calendar.Note: The measure type ‘Data’ cannot be used.